Commitments, Contingencies and Guarantees (Tables)

12 Months Ended

Dec. 31, 2017

COMMITMENTS, CONTINGENCIES AND GUARANTEES

Schedule of commitments

		Payment due by period
($ millions)		2018	2019	2020	2021	2022	2023 and beyond	Total
Commitments
	Product transportation and storage	1 108	976	983	993	905	9 603	14 568
	Energy services	199	160	204	141	143	353	1 200
	Exploration work commitments	—	115	138	157	87	—	497
	Other	356	191	190	143	83	406	1 369
Operating leases		439	330	291	252	208	687	2 207
		2 102	1 772	1 806	1 686	1 426	11 049	19 841